Victor Stein, played by former Buffy the Vampire Slayer mainstay James Marsters.
Website Screen Rant shares that Nerdist spoke with Marsters about his role as Victor Stein, and the actor revealed that he was heavily inspired by Vincent D’Onofrio’s take on Kingpin for Daredevil:
“He [Vincent D’Onofrio] did a Kingpin that so surprised me. It was in so many ways exactly opposite of what I was expecting, of what I’d read in the comics. In the comics, Kingpin is always charming. He’s an extrovert.